Abstract: Let be a type von Neumann subalgebra in a type factor with the faithful trace such that , for . Moreover, suppose has the asymptotically orthogonal property in after tensoring the finite von Neumann algebra , for all . Then we show that is maximal injective in the infinite tensor product von Neumann algebra . As a consequence, we get the following result. Let be a sequence of free groups with () generators. Let be the masa of group von Neumann algebra generated by a generator of or by the sum of all generators and their inverses of the group. Then is maximal injective in the infinite tensor product von Neumann algebra .